Populate canPlayType to renderer

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 4a76b19e8546e08744740d2c55b745c33ccf0013..99956ae7ee64be31c59566d0447f31b4fa212057 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -108,6 +108,11 @@
 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
 #endif
 
+#if defined(OS_ANDROID)
+#include "chrome/common/encrypted_media_messages_android.h"
+#include "chrome/renderer/media/encrypted_media_utils_android.h"
+#endif
+
 using autofill::AutofillAgent;
 using autofill::PasswordAutofillAgent;
 using autofill::PasswordGenerationManager;
@@ -1307,6 +1312,16 @@ void ChromeContentRendererClient::AddKeySystems(
   // TODO(ddorwin): In the next CL, move code from
   // content/renderer/media/crypto/key_systems_info.cc to chrome_key_systems.cc
   // and call AddKeySystems.
+#if defined(OS_ANDROID)
+  std::vector<SupportedKeySystem> supported_systems;
+  RenderThread::Get()->GetChannel()->Send(

[ddorwin, 2013/09/16 17:58:10]

Note: I used content::RenderThread::Get()->Send(), which did not requires
MSG_ROUTING_NONE. Not sure which is better.

[qinmin, 2013/09/17 19:21:06]

ok, make it consistent with ur CL.
On 2013/09/16 17:58:10, ddorwin wrote:

[jam, 2013/09/17 20:26:02]

RenderThread::Get()->Send is enough

regarding routing id, since it's a message not sent from a routed object (i.e.
RenderView) and received in a message filter (i.e. not a routed class like
RenderViewHost), this is right

[qinmin, 2013/09/17 21:26:23]

This is moved to chrome_key_systems.cc, and using
content::RenderThread::Get()->Send()

+      new ChromeViewHostMsg_GetSupportedKeySystems(
+          MSG_ROUTING_NONE, &supported_systems));
+  for (unsigned i = 0; i < supported_systems.size(); ++i) {

[ddorwin, 2013/09/16 17:58:10]

size_t

[qinmin, 2013/09/17 19:21:06]

Done.

+    key_systems->push_back(
+        SupportedKeySystemToKeySystemInfo(supported_systems[i]));

[ddorwin, 2013/09/16 17:58:10]

See ToT and https://codereview.chromium.org/23828007/. My plan was to
conditionally call Add<KeySystem> functions based on platform support.

[qinmin, 2013/09/17 21:26:23]

Done.

+  }
+#endif  // defined(OS_ANDROID)
 }
 
 bool ChromeContentRendererClient::ShouldReportDetailedMessageForSource(