Add an option to make blink media logging verbose

third_party/WebKit/Source/modules/mediasource/MediaSource.cpp

Index: third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
diff --git a/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp b/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
index 16149c109ac69d0b8115ab7b43ecbb26ccd1707d..eb97177426e962e22aca3e4f7b5a176ece60950a 100644
--- a/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
+++ b/third_party/WebKit/Source/modules/mediasource/MediaSource.cpp
@@ -51,11 +51,13 @@
 #include "wtf/text/CString.h"
 #include <memory>
 
+#ifndef BLINK_MSLOG
+#define BLINK_MSLOG DVLOG(3)
+#endif
+
 using blink::WebMediaSource;
 using blink::WebSourceBuffer;
 
-#define MSLOG DVLOG(3)
-
 namespace blink {
 
 static bool throwExceptionIfClosedOrUpdating(bool isOpen, bool isUpdating, ExceptionState& exceptionState)
@@ -108,24 +110,24 @@ MediaSource::MediaSource(ExecutionContext* context)
     , m_liveSeekableRange(TimeRanges::create())
     , m_isAddedToRegistry(false)
 {
-    MSLOG << __FUNCTION__ << " this=" << this;
+    BLINK_MSLOG << __FUNCTION__ << " this=" << this;
 }
 
 MediaSource::~MediaSource()
 {
-    MSLOG << __FUNCTION__ << " this=" << this;
+    BLINK_MSLOG << __FUNCTION__ << " this=" << this;
     DCHECK(isClosed());
 }
 
 void MediaSource::logAndThrowDOMException(ExceptionState& exceptionState, const ExceptionCode& error, const String& message)
 {
-    MSLOG << __FUNCTION__ << " (error=" << error << ", message=" << message << ")";
+    BLINK_MSLOG << __FUNCTION__ << " (error=" << error << ", message=" << message << ")";
     exceptionState.throwDOMException(error, message);
 }
 
 SourceBuffer* MediaSource::addSourceBuffer(const String& type, ExceptionState& exceptionState)
 {
-    MSLOG << __FUNCTION__ << " this=" << this << " type=" << type;
+    BLINK_MSLOG << __FUNCTION__ << " this=" << this << " type=" << type;
 
     // 2.2 https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#widl-MediaSource-addSourceBuffer-SourceBuffer-DOMString-type
     // 1. If type is an empty string then throw an InvalidAccessError exception
@@ -166,13 +168,13 @@ SourceBuffer* MediaSource::addSourceBuffer(const String& type, ExceptionState& e
     m_sourceBuffers->add(buffer);
 
     // 7. Return the new object to the caller.
-    MSLOG << __FUNCTION__ << " this=" << this << " type=" << type << " -> " << buffer;
+    BLINK_MSLOG << __FUNCTION__ << " this=" << this << " type=" << type << " -> " << buffer;
     return buffer;
 }
 
 void MediaSource::removeSourceBuffer(SourceBuffer* buffer, ExceptionState& exceptionState)
 {
-    MSLOG << __FUNCTION__ << " this=" << this << " buffer=" << buffer;
+    BLINK_MSLOG << __FUNCTION__ << " this=" << this << " buffer=" << buffer;
 
     // 2.2 https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#widl-MediaSource-removeSourceBuffer-void-SourceBuffer-sourceBuffer
 
@@ -240,7 +242,7 @@ bool MediaSource::isTypeSupported(const String& type)
     // https://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html#widl-MediaSource-isTypeSupported-boolean-DOMString-type
     // 1. If type is an empty string, then return false.
     if (type.isEmpty()) {
-        MSLOG << __FUNCTION__ << "(" << type << ") -> false (empty input)";
+        BLINK_MSLOG << __FUNCTION__ << "(" << type << ") -> false (empty input)";
         return false;
     }
 
@@ -249,14 +251,14 @@ bool MediaSource::isTypeSupported(const String& type)
 
     // 2. If type does not contain a valid MIME type string, then return false.
     if (contentType.type().isEmpty()) {
-        MSLOG << __FUNCTION__ << "(" << type << ") -> false (invalid mime type)";
+        BLINK_MSLOG << __FUNCTION__ << "(" << type << ") -> false (invalid mime type)";
         return false;
     }
 
     // Note: MediaSource.isTypeSupported() returning true implies that HTMLMediaElement.canPlayType() will return "maybe" or "probably"
     // since it does not make sense for a MediaSource to support a type the HTMLMediaElement knows it cannot play.
     if (HTMLMediaElement::supportsType(contentType) == WebMimeRegistry::IsNotSupported) {
-        MSLOG << __FUNCTION__ << "(" << type << ") -> false (not supported by HTMLMediaElement)";
+        BLINK_MSLOG << __FUNCTION__ << "(" << type << ") -> false (not supported by HTMLMediaElement)";
         return false;
     }
 
@@ -265,7 +267,7 @@ bool MediaSource::isTypeSupported(const String& type)
     // 5. If the MediaSource does not support the specified combination of media type, media subtype, and codecs then return false.
     // 6. Return true.
     bool result = MIMETypeRegistry::isSupportedMediaSourceMIMEType(contentType.type(), codecs);
-    MSLOG << __FUNCTION__ << "(" << type << ") -> " << (result ? "true" : "false");
+    BLINK_MSLOG << __FUNCTION__ << "(" << type << ") -> " << (result ? "true" : "false");
     return result;
 }
 
@@ -488,7 +490,7 @@ void MediaSource::setReadyState(const AtomicString& state)
     DCHECK(state == openKeyword() || state == closedKeyword() || state == endedKeyword());
 
     AtomicString oldState = readyState();
-    MSLOG << __FUNCTION__ << " this=" << this << " : " << oldState << " -> " << state;
+    BLINK_MSLOG << __FUNCTION__ << " this=" << this << " : " << oldState << " -> " << state;
 
     if (state == closedKeyword()) {
         m_webMediaSource.reset();