Add noexcept to move constructors and assignment operators.

Bug: 116614593
Test: build with WITH_TIDY=1
Change-Id: I3cab80a57fac8c13ea449fdb72f27b6f122a0b1e
diff --git a/media/libmedia/OMXBuffer.cpp b/media/libmedia/OMXBuffer.cpp
index 6d54a13..30dc22d 100644
--- a/media/libmedia/OMXBuffer.cpp
+++ b/media/libmedia/OMXBuffer.cpp
@@ -172,7 +172,7 @@
     return OK;
 }
 
-OMXBuffer& OMXBuffer::operator=(OMXBuffer&& source) {
+OMXBuffer& OMXBuffer::operator=(OMXBuffer&& source) noexcept {
     mBufferType = std::move(source.mBufferType);
     mRangeOffset = std::move(source.mRangeOffset);
     mRangeLength = std::move(source.mRangeLength);
diff --git a/media/libmedia/include/media/OMXBuffer.h b/media/libmedia/include/media/OMXBuffer.h
index 9c9f5e7..4abe9e6 100644
--- a/media/libmedia/include/media/OMXBuffer.h
+++ b/media/libmedia/include/media/OMXBuffer.h
@@ -137,7 +137,7 @@
     hidl_memory mHidlMemory;
 
     // Move assignment
-    OMXBuffer &operator=(OMXBuffer&&);
+    OMXBuffer &operator=(OMXBuffer&&) noexcept;
 
     // Deleted copy constructor and assignment.
     OMXBuffer(const OMXBuffer&) = delete;