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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "chrome/renderer/prerender/prerender_helper.h" | 5 #include "chrome/renderer/prerender/prerender_helper.h" |
| 6 | 6 |
| 7 #include "base/metrics/field_trial.h" | 7 #include "base/metrics/field_trial.h" |
| 8 #include "base/metrics/histogram.h" | 8 #include "base/metrics/histogram.h" |
| 9 #include "chrome/common/render_messages.h" | 9 #include "chrome/common/render_messages.h" |
| 10 #include "content/renderer/navigation_state.h" | 10 #include "content/renderer/navigation_state.h" |
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| 107 // longer needs a PrerenderHelper. | 107 // longer needs a PrerenderHelper. |
| 108 delete prerender_helper; | 108 delete prerender_helper; |
| 109 } | 109 } |
| 110 | 110 |
| 111 void PrerenderHelper::WillCreateMediaPlayer( | 111 void PrerenderHelper::WillCreateMediaPlayer( |
| 112 WebKit::WebFrame* frame, | 112 WebKit::WebFrame* frame, |
| 113 WebKit::WebMediaPlayerClient* client) { | 113 WebKit::WebMediaPlayerClient* client) { |
| 114 if (is_prerendering_) { | 114 if (is_prerendering_) { |
| 115 // Cancel prerendering in the case of HTML5 media, to avoid playing sounds | 115 // Cancel prerendering in the case of HTML5 media, to avoid playing sounds |
| 116 // in the background. | 116 // in the background. |
| 117 Send(new ViewHostMsg_MaybeCancelPrerenderForHTML5Media( | 117 Send(new ChromeViewHostMsg_MaybeCancelPrerenderForHTML5Media( |
| 118 render_view()->routing_id())); | 118 render_view()->routing_id())); |
| 119 } | 119 } |
| 120 } | 120 } |
| 121 | 121 |
| 122 void PrerenderHelper::DidStartProvisionalLoad(WebKit::WebFrame* frame) { | 122 void PrerenderHelper::DidStartProvisionalLoad(WebKit::WebFrame* frame) { |
| 123 // If this is the first provisional load since prerendering started, get its | 123 // If this is the first provisional load since prerendering started, get its |
| 124 // request time. | 124 // request time. |
| 125 if (is_prerendering_ && prerender_start_time_.is_null()) { | 125 if (is_prerendering_ && prerender_start_time_.is_null()) { |
| 126 WebKit::WebDataSource* data_source = frame->provisionalDataSource(); | 126 WebKit::WebDataSource* data_source = frame->provisionalDataSource(); |
| 127 if (!data_source) { | 127 if (!data_source) { |
| 128 NOTREACHED(); | 128 NOTREACHED(); |
| 129 return; | 129 return; |
| 130 } | 130 } |
| 131 NavigationState* navigation_state = | 131 NavigationState* navigation_state = |
| 132 NavigationState::FromDataSource(data_source); | 132 NavigationState::FromDataSource(data_source); |
| 133 prerender_start_time_ = navigation_state->request_time(); | 133 prerender_start_time_ = navigation_state->request_time(); |
| 134 // The first navigation for prerendering RenderViews can only be triggered | 134 // The first navigation for prerendering RenderViews can only be triggered |
| 135 // from PrerenderContents, so there should be a request_time. | 135 // from PrerenderContents, so there should be a request_time. |
| 136 DCHECK(!prerender_start_time_.is_null()); | 136 DCHECK(!prerender_start_time_.is_null()); |
| 137 } | 137 } |
| 138 } | 138 } |
| 139 | 139 |
| 140 bool PrerenderHelper::OnMessageReceived( | 140 bool PrerenderHelper::OnMessageReceived( |
| 141 const IPC::Message& message) { | 141 const IPC::Message& message) { |
| 142 IPC_BEGIN_MESSAGE_MAP(PrerenderHelper, message) | 142 IPC_BEGIN_MESSAGE_MAP(PrerenderHelper, message) |
| 143 IPC_MESSAGE_HANDLER(ViewMsg_SetIsPrerendering, OnSetIsPrerendering) | 143 IPC_MESSAGE_HANDLER(ChromeViewMsg_SetIsPrerendering, OnSetIsPrerendering) |
| 144 IPC_END_MESSAGE_MAP() | 144 IPC_END_MESSAGE_MAP() |
| 145 // Return false on ViewMsg_SetIsPrerendering so other observers can see the | 145 // Return false on ViewMsg_SetIsPrerendering so other observers can see the |
| 146 // message. | 146 // message. |
| 147 return false; | 147 return false; |
| 148 } | 148 } |
| 149 | 149 |
| 150 void PrerenderHelper::OnSetIsPrerendering(bool is_prerendering) { | 150 void PrerenderHelper::OnSetIsPrerendering(bool is_prerendering) { |
| 151 // Immediately after construction, |this| may receive the message that | 151 // Immediately after construction, |this| may receive the message that |
| 152 // triggered its creation. If so, ignore it. | 152 // triggered its creation. If so, ignore it. |
| 153 if (is_prerendering) | 153 if (is_prerendering) |
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| 166 | 166 |
| 167 void PrerenderHelper::UpdateVisibilityState() { | 167 void PrerenderHelper::UpdateVisibilityState() { |
| 168 if (render_view()->webview()) { | 168 if (render_view()->webview()) { |
| 169 render_view()->webview()->setVisibilityState( | 169 render_view()->webview()->setVisibilityState( |
| 170 render_view()->visibilityState(), | 170 render_view()->visibilityState(), |
| 171 false); | 171 false); |
| 172 } | 172 } |
| 173 } | 173 } |
| 174 | 174 |
| 175 } // namespace prerender | 175 } // namespace prerender |
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