[DevTools] Handle emulation in embedder, call into web API.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index db273e76bb705e9b5bc7a19613c43f60713cef19..5b423d31a0f758d4cc8abc32ae331c212086c15c 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -42,6 +42,7 @@
 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
 #include "third_party/WebKit/public/platform/WebFloatRect.h"
 #include "third_party/WebKit/public/platform/WebScreenInfo.h"
+#include "third_party/WebKit/public/web/WebDeviceEmulationParams.h"
 #include "third_party/WebKit/public/web/WebFindOptions.h"
 #include "third_party/WebKit/public/web/WebMediaPlayerAction.h"
 #include "third_party/WebKit/public/web/WebPluginAction.h"
@@ -73,6 +74,8 @@
 
 #define IPC_MESSAGE_START ViewMsgStart
 
+IPC_ENUM_TRAITS_MAX_VALUE(blink::WebDeviceEmulationParams::ScreenPosition,
+                          blink::WebDeviceEmulationParams::ScreenPositionLast)
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebMediaPlayerAction::Type,
                           blink::WebMediaPlayerAction::Type::TypeLast)
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebPluginAction::Type,
@@ -139,6 +142,20 @@ IPC_STRUCT_TRAITS_BEGIN(blink::WebFloatRect)
   IPC_STRUCT_TRAITS_MEMBER(height)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(blink::WebSize)
+  IPC_STRUCT_TRAITS_MEMBER(width)
+  IPC_STRUCT_TRAITS_MEMBER(height)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(blink::WebDeviceEmulationParams)
+  IPC_STRUCT_TRAITS_MEMBER(screenPosition)
+  IPC_STRUCT_TRAITS_MEMBER(deviceScaleFactor)
+  IPC_STRUCT_TRAITS_MEMBER(viewSize)
+  IPC_STRUCT_TRAITS_MEMBER(fitToView)
+  IPC_STRUCT_TRAITS_MEMBER(offset)
+  IPC_STRUCT_TRAITS_MEMBER(scale)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(blink::WebScreenInfo)
   IPC_STRUCT_TRAITS_MEMBER(deviceScaleFactor)
   IPC_STRUCT_TRAITS_MEMBER(depth)
@@ -619,6 +636,13 @@ IPC_MESSAGE_ROUTED0(ViewMsg_Close)
 IPC_MESSAGE_ROUTED1(ViewMsg_Resize,
                     ViewMsg_Resize_Params /* params */)
 
+// Enables device emulation. See WebDeviceEmulationParams for description.
+IPC_MESSAGE_ROUTED1(ViewMsg_EnableDeviceEmulation,
+                    blink::WebDeviceEmulationParams /* params */)
+
+// Disables device emulation, enabled previously by EnableDeviceEmulation.
+IPC_MESSAGE_ROUTED0(ViewMsg_DisableDeviceEmulation)
+
 // Sent to inform the renderer of its screen device color profile. An empty
 // profile tells the renderer use the default sRGB color profile.
 IPC_MESSAGE_ROUTED1(ViewMsg_ColorProfile,