[Devtools] Fixed devtools altering srcset image after close

third_party/WebKit/Source/web/DevToolsEmulator.cpp

Index: third_party/WebKit/Source/web/DevToolsEmulator.cpp
diff --git a/third_party/WebKit/Source/web/DevToolsEmulator.cpp b/third_party/WebKit/Source/web/DevToolsEmulator.cpp
index e3f8ce90e4eae1afe9e86c579be5acb22e2634b8..3f45ff0f59a27a6dfb61fb7e472b3d296f35c6f2 100644
--- a/third_party/WebKit/Source/web/DevToolsEmulator.cpp
+++ b/third_party/WebKit/Source/web/DevToolsEmulator.cpp
@@ -4,6 +4,7 @@
 
 #include "web/DevToolsEmulator.h"
 
+#include "core/fetch/MemoryCache.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
@@ -200,7 +201,7 @@ void DevToolsEmulator::enableDeviceEmulation(
       m_emulationParams.scale == params.scale) {
     return;
   }
-
+  memoryCache()->evictResources();

[dgozman, 2016/12/13 20:56:11]

Let's only do this when necessary, e.g. deviceScaleFactor changed or when we
actually enabled/disabled emulation.

[allada, 2016/12/14 19:50:47]

Done. I moved it into blink instead.

   m_emulationParams = params;
 
   if (!m_deviceMetricsEnabled) {
@@ -234,7 +235,7 @@ void DevToolsEmulator::enableDeviceEmulation(
 void DevToolsEmulator::disableDeviceEmulation() {
   if (!m_deviceMetricsEnabled)
     return;
-
+  memoryCache()->evictResources();
   m_deviceMetricsEnabled = false;
   m_webViewImpl->setBackgroundColorOverride(Color::transparent);
   m_webViewImpl->page()->settings().setDeviceScaleAdjustment(