1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/render_widget_host_view_aura.h"
#include "base/bind.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "base/threading/thread_task_runner_handle.h"
#include "content/browser/renderer_host/delegated_frame_host.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_view_aura.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_delegate.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/shell/browser/shell.h"
namespace content {
namespace {
#if defined(OS_CHROMEOS)
const char kMinimalPageDataURL[] =
"data:text/html,<html><head></head><body>Hello, world</body></html>";
// Run the current message loop for a short time without unwinding the current
// call stack.
void GiveItSomeTime() {
base::RunLoop run_loop;
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE, run_loop.QuitClosure(),
base::TimeDelta::FromMilliseconds(250));
run_loop.Run();
}
#endif // defined(OS_CHROMEOS)
class FakeWebContentsDelegate : public WebContentsDelegate {
public:
FakeWebContentsDelegate() = default;
~FakeWebContentsDelegate() override = default;
void SetShowStaleContentOnEviction(bool value) {
show_stale_content_on_eviction_ = value;
}
bool ShouldShowStaleContentOnEviction(WebContents* source) override {
return show_stale_content_on_eviction_;
}
private:
bool show_stale_content_on_eviction_ = false;
DISALLOW_COPY_AND_ASSIGN(FakeWebContentsDelegate);
};
} // namespace
class RenderWidgetHostViewAuraBrowserTest : public ContentBrowserTest {
public:
RenderViewHost* GetRenderViewHost() const {
RenderViewHost* const rvh = shell()->web_contents()->GetRenderViewHost();
CHECK(rvh);
return rvh;
}
RenderWidgetHostViewAura* GetRenderWidgetHostView() const {
return static_cast<RenderWidgetHostViewAura*>(
GetRenderViewHost()->GetWidget()->GetView());
}
DelegatedFrameHost* GetDelegatedFrameHost() const {
return GetRenderWidgetHostView()->delegated_frame_host_.get();
}
};
#if defined(OS_CHROMEOS)
IN_PROC_BROWSER_TEST_F(RenderWidgetHostViewAuraBrowserTest,
StaleFrameContentOnEvictionNormal) {
NavigateToURL(shell(), GURL(kMinimalPageDataURL));
// Make sure the renderer submits at least one frame before hiding it.
RenderFrameSubmissionObserver submission_observer(shell()->web_contents());
if (!submission_observer.render_frame_count())
submission_observer.WaitForAnyFrameSubmission();
FakeWebContentsDelegate delegate;
delegate.SetShowStaleContentOnEviction(true);
shell()->web_contents()->SetDelegate(&delegate);
// Initially there should be no stale content set.
EXPECT_FALSE(
GetDelegatedFrameHost()->stale_content_layer_->has_external_content());
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kNotStarted);
// Hide the view and evict the frame. This should trigger a copy of the stale
// frame content.
GetRenderWidgetHostView()->Hide();
static_cast<viz::FrameEvictorClient*>(GetDelegatedFrameHost())
->EvictDelegatedFrame();
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kPendingEvictionRequests);
// Wait until the stale frame content is copied and set onto the layer.
while (!GetDelegatedFrameHost()->stale_content_layer_->has_external_content())
GiveItSomeTime();
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kNotStarted);
// Unhidding the view should reset the stale content layer to show the new
// frame content.
GetRenderWidgetHostView()->Show();
EXPECT_FALSE(
GetDelegatedFrameHost()->stale_content_layer_->has_external_content());
}
IN_PROC_BROWSER_TEST_F(RenderWidgetHostViewAuraBrowserTest,
StaleFrameContentOnEvictionRejected) {
NavigateToURL(shell(), GURL(kMinimalPageDataURL));
// Wait for first frame activation when a surface is embedded.
while (!GetDelegatedFrameHost()->HasSavedFrame())
GiveItSomeTime();
FakeWebContentsDelegate delegate;
delegate.SetShowStaleContentOnEviction(true);
shell()->web_contents()->SetDelegate(&delegate);
// Initially there should be no stale content set.
EXPECT_FALSE(
GetDelegatedFrameHost()->stale_content_layer_->has_external_content());
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kNotStarted);
// Hide the view and evict the frame. This should trigger a copy of the stale
// frame content.
GetRenderWidgetHostView()->Hide();
static_cast<viz::FrameEvictorClient*>(GetDelegatedFrameHost())
->EvictDelegatedFrame();
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kPendingEvictionRequests);
GetRenderWidgetHostView()->Show();
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kNotStarted);
// Wait until the stale frame content is copied and the result callback is
// complete.
GiveItSomeTime();
// This should however not set the stale content as the view is visible and
// new frames are being submitted.
EXPECT_FALSE(
GetDelegatedFrameHost()->stale_content_layer_->has_external_content());
}
IN_PROC_BROWSER_TEST_F(RenderWidgetHostViewAuraBrowserTest,
StaleFrameContentOnEvictionNone) {
NavigateToURL(shell(), GURL(kMinimalPageDataURL));
// Wait for first frame activation when a surface is embedded.
while (!GetDelegatedFrameHost()->HasSavedFrame())
GiveItSomeTime();
FakeWebContentsDelegate delegate;
delegate.SetShowStaleContentOnEviction(false);
shell()->web_contents()->SetDelegate(&delegate);
// Initially there should be no stale content set.
EXPECT_FALSE(
GetDelegatedFrameHost()->stale_content_layer_->has_external_content());
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kNotStarted);
// Hide the view and evict the frame. This should not trigger a copy of the
// stale frame content as the WebContentDelegate returns false.
GetRenderWidgetHostView()->Hide();
static_cast<viz::FrameEvictorClient*>(GetDelegatedFrameHost())
->EvictDelegatedFrame();
EXPECT_EQ(GetDelegatedFrameHost()->frame_eviction_state_,
DelegatedFrameHost::FrameEvictionState::kNotStarted);
// Wait for a while to ensure any copy requests that were sent out are not
// completed. There shouldnt be any requests sent however.
GiveItSomeTime();
EXPECT_FALSE(
GetDelegatedFrameHost()->stale_content_layer_->has_external_content());
}
#endif // #if defined(OS_CHROMEOS)
} // namespace content
|
